Convert webvtt regions tests from video-test.js to testharness.js based

third_party/WebKit/LayoutTests/media/track/regions-webvtt/vtt-region-display-expected.txt

Index: third_party/WebKit/LayoutTests/media/track/regions-webvtt/vtt-region-display-expected.txt
diff --git a/third_party/WebKit/LayoutTests/media/track/regions-webvtt/vtt-region-display-expected.txt b/third_party/WebKit/LayoutTests/media/track/regions-webvtt/vtt-region-display-expected.txt
deleted file mode 100644
index 03bf685dddb2a9a4a11ade2fcbb3f16995dbf31f..0000000000000000000000000000000000000000
--- a/third_party/WebKit/LayoutTests/media/track/regions-webvtt/vtt-region-display-expected.txt
+++ /dev/null
@@ -1,51 +0,0 @@
-Tests default rendering for TextTrackCues that belong to a VTTRegion.
-
-** The text track has only one region **
-EXPECTED (testTrack.regions.length == '1') OK
-
-** Inspecting cues displayed within region**
-
-RUN(video.currentTime = 0.2)
-EVENT(seeked)
-Total cues in region: 1
-Cue content is: We are in New York City
-Cue lines visible from this cue: 1
-EXPECTED (totalVisibleLines <= testTrack.regions[0].height == 'true') OK
-
-RUN(video.currentTime = 0.5)
-EVENT(seeked)
-Total cues in region: 2
-Cue content is: We are in New York City
-Cue lines visible from this cue: 1
-Cue content is: Second cue
-Cue lines visible from this cue: 1
-EXPECTED (totalVisibleLines <= testTrack.regions[0].height == 'true') OK
-
-RUN(video.currentTime = 1)
-EVENT(seeked)
-Total cues in region: 3
-Cue content is: We are in New York City
-Cue lines visible from this cue: 0
-Cue content is: Second cue
-Cue lines visible from this cue: 0
-Cue content is: Multiline Cue
-Cue lines visible from this cue: 2
-EXPECTED (totalVisibleLines <= testTrack.regions[0].height == 'true') OK
-
-RUN(video.currentTime = 2.3)
-EVENT(seeked)
-Total cues in region: 2
-Cue content is: Multiline Cue
-Cue lines visible from this cue: 1
-Cue content is: Fourth cue!
-Cue lines visible from this cue: 1
-EXPECTED (totalVisibleLines <= testTrack.regions[0].height == 'true') OK
-
-RUN(video.currentTime = 3)
-EVENT(seeked)
-Total cues in region: 1
-Cue content is: Fourth cue!
-Cue lines visible from this cue: 1
-EXPECTED (totalVisibleLines <= testTrack.regions[0].height == 'true') OK
-END OF TEST
-